WO2022095200A1 - 液位计及无人机 - Google Patents

液位计及无人机 Download PDF

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Publication number
WO2022095200A1
WO2022095200A1 PCT/CN2020/135012 CN2020135012W WO2022095200A1 WO 2022095200 A1 WO2022095200 A1 WO 2022095200A1 CN 2020135012 W CN2020135012 W CN 2020135012W WO 2022095200 A1 WO2022095200 A1 WO 2022095200A1
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WO
WIPO (PCT)
Prior art keywords
liquid level
main body
level gauge
bracket
cavity
Prior art date
Application number
PCT/CN2020/135012
Other languages
English (en)
French (fr)
Inventor
张弛
周乐
舒展
Original Assignee
深圳市大疆创新科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 深圳市大疆创新科技有限公司 filed Critical 深圳市大疆创新科技有限公司
Priority to CN202080071112.XA priority Critical patent/CN114650949A/zh
Publication of WO2022095200A1 publication Critical patent/WO2022095200A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D47/00—Equipment not otherwise provided for
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U2101/00—UAVs specially adapted for particular uses or applications

Definitions

  • the present disclosure relates to the technical field of unmanned aerial vehicles, and in particular, to a liquid level gauge and an unmanned aerial vehicle.
  • liquid level gauge monitoring module used by the existing UAV is directly fixed on the fuselage.
  • the fit between the liquid level gauge and the container cannot be guaranteed, which affects the monitoring effect of the liquid level. , there is even a risk of not being able to identify the liquid level.
  • the technical problem to be solved by the present disclosure is how to provide a liquid level gauge that can ensure close contact with the bottom of the container.
  • the technical problem to be solved by the present disclosure is how to provide an unmanned aerial vehicle that can accurately and reliably identify the liquid level of a container.
  • a liquid level gauge wherein, it includes a first bracket, a main body, an elastic member and a sensor module; the lower end of the first bracket is used for connecting with a fixed structure; the main body is movably connected to the the upper end of the first bracket; the elastic member is arranged between the main body and the first bracket to provide an upward pre-tightening force to the main body; the sensor module is arranged on the main body to Magnetic flux is sensed.
  • the main body has a first cavity, and the first cavity is opened at the lower end of the main body; wherein, the main body is sleeved on the upper end of the first bracket through the opening, And the first bracket portion is located in the first cavity.
  • the first bracket has a second cavity, and the second cavity is opened at the upper end of the first bracket; wherein, the elastic member is at least partially disposed in the second cavity in vivo.
  • a connecting column is provided in the first cavity, and the upper end of the first bracket is sleeved on the lower end of the connecting column, so that the connecting column is partially located in the second cavity;
  • the elastic member is disposed between the lower end of the connecting column and the bottom of the second cavity.
  • the upper end of the first bracket is provided with a buckle structure.
  • the sensor module is disposed on the top of the first cavity, and a dustproof structure is disposed in the first cavity, and the dustproof structure is located below the sensor module.
  • the sensor module includes at least two sensor units, and the at least two sensor units are arranged at the same height position of the main body.
  • the number of the sensor units ranges from 4 to 12.
  • the at least two sensor units are arranged along a circular path.
  • the sensor module has a signal output terminal; wherein, the at least two sensor units are connected to the signal output terminal in a signal parallel manner.
  • the sensor module includes a circuit board, a sensor unit, a signal output end, and a foam board; the circuit board is arranged in the main body; the sensor unit is arranged on the circuit board ; One end of the signal output end is connected to the circuit board, and the other end protrudes from the main body; the foam board is arranged between the circuit board and the inner wall of the top of the main body.
  • the top of the main body has an opening
  • the sensor module further includes a housing; the housing is detachably arranged on the opening on the top of the main body; wherein the circuit board is arranged on the In the casing, the other end of the signal output end protrudes from the casing, and the foam board is arranged between the circuit board and the inner wall of the top of the casing.
  • a dust sealing sleeve is provided between the outside of the first bracket and the outside of the main body.
  • an unmanned aerial vehicle wherein, it includes a frame, a container, a liquid level float, and the liquid level gauge proposed by the present disclosure and described in the above-mentioned embodiments;
  • the frame has a fixed structure;
  • the container is detachably arranged on the rack and above the fixed structure;
  • the liquid level float includes a second bracket and a swing arm;
  • the second bracket is arranged at the bottom of the container ;
  • the swing arm is pivotally connected to the second bracket, and the two ends are respectively provided with a magnet and a floating cavity;
  • the positions of the floats correspond; wherein, the elastic member of the liquid level gauge pushes the upper end of the main body of the liquid level gauge against the outer bottom of the container.
  • the second bracket is connected to the container by at least two connectors.
  • the end of the swing arm where the floating cavity is provided is provided with a counterweight.
  • the liquid level gauge proposed by the present disclosure includes a first bracket, a main body, an elastic member, and a sensor module.
  • the main body is movably connected to the upper end of the first bracket, and the elastic piece is arranged between the main body and the first bracket to provide an upward pre-tightening force to the main body.
  • the liquid level gauge proposed in the present disclosure can use the pre-tightening force provided by the elastic member to ensure that the liquid level gauge is closely attached to the bottom of the container above when it is installed in a fixed structure such as a UAV frame, and lifts the Reliability and accuracy of level gauges.
  • FIG. 1 is a schematic structural diagram of a liquid level gauge according to an exemplary embodiment
  • Fig. 2 is the exploded schematic diagram of the liquid level gauge shown in Fig. 1;
  • Fig. 3 is the sectional view of the liquid level gauge shown in Fig. 1;
  • FIG. 4 is a perspective view of a sensor module of the liquid level gauge shown in FIG. 1;
  • FIG. 5 is an exploded schematic view of the sensor module shown in FIG. 4;
  • FIG. 6 is an exploded schematic view of the sensor module shown in FIG. 4 from another angle;
  • FIG. 7 is a partial schematic diagram of an unmanned aerial vehicle according to an exemplary embodiment
  • Fig. 8 is a sectional view of a part of the structure of the unmanned aerial vehicle shown in Fig. 7;
  • Figure 9 is a partial side sectional view of Figure 8.
  • FIG. 10 is a schematic structural diagram of the liquid level float of the drone shown in FIG. 7 .
  • Second card slot 2311. Connector;
  • Example embodiments will now be described more fully with reference to the accompanying drawings.
  • Example embodiments can be embodied in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.
  • the same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.
  • FIG. 1 it typically shows a schematic structural diagram of the liquid level gauge 100 proposed in the present disclosure.
  • the liquid level gauge 100 proposed in the present disclosure is illustrated by taking the application to an agricultural drone with a liquid container as an example. It will be easily understood by those skilled in the art that, in order to apply the related designs of the present disclosure to other types of unmanned aerial vehicles or other equipment, various modifications, additions, substitutions, deletions or deletions may be made to the following specific embodiments. Other variations, which remain within the scope of the principles of the level gauge 100 presented in this disclosure.
  • the liquid level gauge 100 proposed by the present disclosure includes a first bracket 110 , a main body 120 , an elastic member, and a sensor module.
  • Figure 2 typically shows an exploded schematic view of the liquid level gauge
  • Figure 3 typically shows a cross-sectional view of the liquid level gauge
  • Figure 4 representatively shows the liquid level A perspective view of the sensor module of the meter
  • FIG. 5 representatively shows an exploded schematic view of the sensor module
  • FIG. 6 representatively shows an exploded schematic view of the sensor module from another angle.
  • the structure, connection manner and functional relationship of each main component of the liquid level gauge 100 proposed in the present disclosure will be described in detail below with reference to FIGS. 1 to 6 .
  • the lower end of the first bracket 110 is used to connect with a fixing structure 211 , such as the fixing structure 211 on the frame 210 of the drone.
  • the main body 120 is movably connected to the upper end of the first bracket 110 .
  • the elastic member 130 is disposed between the main body 120 and the bracket of the liquid level gauge 100 , and the elastic member 130 can provide an upward pre-tightening force to the main body 120 . Accordingly, when the liquid level gauge 100 is fixed to the fixing structure 211 by the first bracket 110 , the main body 120 can be tightly attached to the bottom of the container 220 by the pre-tightening force provided by the elastic member 130 (see FIG. 8 for details).
  • the sensor module 140 is disposed on the main body 120 , and the sensor module 140 can sense the magnetic flux of the magnet of the liquid level float 230 (see FIG. 9 ) disposed inside the container 220 . Accordingly, the control system of the device (eg, unmanned aerial vehicle) installed in the liquid level gauge 100 can compare the magnetic flux sensed by the liquid level gauge 100 with a preset threshold, thereby judging the liquid level state in the container 220 , to realize the liquid level detection function.
  • the control system of the device eg, unmanned aerial vehicle
  • the liquid level gauge 100 proposed in the present disclosure can utilize the pre-tightening force provided by the elastic member 130 to ensure the liquid level gauge 100
  • the 100 is closely attached to the bottom of the container 220 above, which improves the reliability and accuracy of the liquid level gauge 100 .
  • the main body 120 may have a first cavity 121 , and the first cavity 121 is opened at the lower end of the main body 120 .
  • the main body 120 is sleeved on the upper end of the first bracket 110 through the above-mentioned opening, so that the first bracket 110 is partially located in the first cavity 121 .
  • the first bracket 110 may have a second cavity 111 , and the second cavity 111 The upper end of the main body 120 is opened.
  • the elastic member 130 is at least partially disposed in the second cavity 111 .
  • the first cavity 121 can be arranged in There are connecting posts 122 .
  • the upper end of the first bracket 110 is sleeved on the lower end of the connecting column 122 , so that the connecting column 122 is partially located in the second cavity 111 .
  • the elastic member 130 may be disposed between the lower end of the connecting column 122 and the bottom of the second cavity 111 .
  • the lower end of the elastic member 130 can be connected to the bottom of the second cavity 111 , and the upper end of the elastic member 130 can abut against the lower end of the connecting column 122 , accordingly, the elastic member 130 can apply a pre-tightening force to the connecting column 122 .
  • the elastic member 130 is in a compressed state and exerts an upward elastic restoring force on the main body 120, that is, the above-mentioned pre-tightening force, so as to make the liquid level fixed on the fixing structure 211.
  • the main body 120 of the meter 100 is tightly fitted to the bottom of the container 220 .
  • the upper end of the first bracket 110 may be provided with a buckle structure 112 .
  • the buckle structure 112 may specifically include a hook structure, a tenon structure, a locking protrusion structure, etc., and is not limited to this embodiment.
  • the sensor module 140 can be disposed on the top of the first cavity 121 and inside the first cavity 121 .
  • a dustproof structure 123 may be provided, and the dustproof structure 123 is located below the sensor module 140 .
  • the liquid level gauge 100 can use the dustproof structure 123 to provide the elastic member 130 with a dustproof function, so as to prevent dust from entering the first cavity 121 and the second cavity 111 , thereby preventing the elastic member 130 from getting stuck due to dust accumulation.
  • the problem of dead, powerless rebound further improves the accuracy and reliability of the level gauge 100.
  • the dustproof structure 123 may include a dustproof sticker.
  • the sensor module 140 may include at least two sensor units 141 , and these sensor units 141 may be arranged at the same height position of the main body 120 , in other words, when the liquid When the level meter 100 is installed at the bottom of the container 220 , the distances between the sensor units 141 and the bottom of the container 220 are approximately the same.
  • the liquid level gauge 100 can use the sensor module 140 including at least two sensor units 141 to provide relatively accurate sensing of the magnetic flux in at least two directions, avoiding the instability of the liquid level float 230 caused by the The influence of magnetic field direction deviation on magnetic flux sensing further improves the accuracy and reliability of the liquid level gauge 100 .
  • the sensor module 140 of the liquid level gauge 100 may also include only one sensor unit 141 , which is not limited to this embodiment.
  • the number of the sensor units 141 may be 4 to 12, for example, 4, 6, 9, 12, etc. . In other embodiments, the number of sensor units 141 may be less than 4, or may be more than 12, such as 3, 16, etc., which is not limited to this embodiment.
  • the at least two sensor units 141 may be arranged approximately along a circular path.
  • the liquid level float 230 corresponding to the bottom of the container 220 includes the design of the magnet 233, and the magnet 233 is located in the plane of the above-mentioned circular path (for example, the horizontal plane, or the plane such as the bottom of the container 220).
  • the projection is approximately at the center of the circular path.
  • the liquid level gauge 100 can make the distances between the sensor units 141 and the magnets 233 approximately equal, thereby reducing the difference between the magnetic fluxes of the magnets 233 sensed by the sensor units 141 and further improving the accuracy of the liquid level gauge 100 sturdiness and reliability.
  • the at least two sensor units 141 may also adopt other arrangement forms, and the positional relationship between the at least two sensor units 141 and the magnet 233 of the liquid level float 230 may also adopt other forms, which are not limited to this embodiment. limit.
  • the sensor module 140 may include a circuit board 143 and a signal output terminal 142 (eg, a signal line). Specifically, at least two sensor units 141 are disposed on the circuit board 143 , one end of the signal output terminal 142 is connected (for example, by welding) to the circuit board 143 , and the other end extends out of the main body 120 .
  • the sensor module 140 may output the sensed magnetic flux to the control system via the signal output terminal 142 .
  • the at least two sensor units 141 can be connected to the signal output end 142 in a signal parallel manner.
  • the magnetic flux signal output by the sensor module 140 to the control system can be understood as the one with the largest magnetic flux sensed by the at least two sensor units 141 , which further improves the sensitivity and accuracy of the liquid level gauge 100 .
  • the sensor module 140 may further include a housing 124 .
  • a housing 124 Specifically, an opening is formed on the top of the main body 120 , and the casing 124 is detachably fixed in the opening on the top of the main body 120 .
  • the housing 124 can be used to accommodate other structures of the sensor module 140 , such as the circuit board 143 and the foam board 144 .
  • the housing 124 also has a wire outlet 1241 for partially accommodating the signal output terminal 142 of the sensor module 140 , and for one end of the signal output terminal 142 to be connected to the control system, extending through the wire outlet 1241 .
  • the casing 124 can also be regarded as an integrated structure provided at the top opening of the main body 120 . That is, the sensor module 140 may not include the casing 124, and the top of the main body 120 may also be a closed structure. On this basis, the remaining structures included in the sensor module 140 , such as the circuit board 143 , the foam board 144 , etc., are still arranged in the main body 120 .
  • the housing 124 provided in this embodiment can be regarded as a housing for accommodating other structures, and for the main body 120 , it can also be regarded as a detachable partial cover structure on the top of the main body 120 . .
  • the outer wall of the housing 124 may be provided with a first snap groove 1244
  • the inner wall of the opening of the main body 120 may be provided with a first snap 1201
  • the casing 124 and the opening of the main body 120 are detachably fixed through the snap fit of the first snap groove 1244 and the first snap 1202 .
  • the buckles and the groove structures on the main body 120 and the casing 124 may also exchange positions, or other mutually matched positioning structures may be adopted, which is not limited to this embodiment.
  • the end of the wire outlet 1241 of the housing 124 may be detachably fixed with a terminal block 1242 .
  • the terminal block 1242 defines a through hole through which the signal output terminal 142 extends.
  • the inner wall of the port of the wire outlet 1241 is provided with a second buckle 12411.
  • the end clamping block 1242 is provided with a second clamping slot 12421.
  • the snap fit of the two snaps 12411 realizes detachable fixing.
  • the buckle and the slot structure on the end block 1242 and the wire outlet 1241 can also exchange positions, or other mutually matched positioning structures can be adopted, which is not limited to this embodiment.
  • a third slot 1431 may be opened on the periphery of the circuit board 143 , and correspondingly, the housing 124 A third buckle 1243 can be opened on the inner wall of the casing 124 , and the housing 124 and the circuit board 143 can be detachably fixed through the above-mentioned third buckle 1243 and the third slot 1431 through the buckle cooperation.
  • the buckles and the groove structures on the casing 124 and the circuit board 143 may also exchange positions, or other mutually matched positioning structures may be adopted, which is not limited to this embodiment.
  • the sensor module 140 may further include a foam board 144 .
  • the foam board 144 is disposed between the circuit board 143 and the inner wall of the top of the main body 120 (ie, the inner wall of the top of the housing 124 ).
  • the foam board 144 is provided with a plurality of through holes 1442 , and the through holes 1442 are used to accommodate the plurality of sensor units 141 provided on the circuit board 143 .
  • the present disclosure can use the foam board 144 to fill the gap between the circuit board 143 and the main body 120 , realize the pre-fixation of the circuit board 143 , and use the material characteristics of the foam board 144 to meet the lightweight requirements.
  • the setting of the foam board 144 can also reduce the amount of filling material such as potting glue.
  • the peripheral edge of the foam board 144 may be provided with a fourth slot 1441, the fourth slot 1441 corresponds to the third clip 1243, and the casing 124 and the foam board 144 are connected to the third clip 1243 through the third clip 1243.
  • the snap fit of the four snap slots 1441 realizes detachable fixing.
  • the buckles and the groove structures on the casing 124 and the foam board 144 may also exchange positions, or other mutually matched positioning structures may be adopted, which is not limited to this embodiment.
  • the present disclosure can fill, for example, fill the gap between the circuit board 143 , the foam board 144 and the main body 120 .
  • the filling material of the sealant is used to realize the waterproof and dustproof functions of the sensor module 140 .
  • a dustproof sealing sleeve 150 may be provided between the outside of the first bracket 110 and the outside of the main body 120 .
  • dust and impurities can be reduced from entering the liquid level gauge 100 through the movable connection between the first bracket 110 and the main body 120 , thereby providing a dustproof function for the elastic member 130 to prevent dust from entering the first cavity 121 and the main body 120 .
  • the second cavity 111 avoids the problem that the elastic member 130 is stuck due to dust accumulation and cannot rebound, and further improves the accuracy and reliability of the liquid level gauge 100 .
  • level gauges shown in the drawings and described in this specification are but a few examples of the many types of fluid level gauges that can employ the principles of the present disclosure. It should be clearly understood that the principles of the present disclosure are by no means limited to any detail of the level gauge or any component of the level gauge shown in the drawings or described in this specification.
  • FIG. 7 it representatively shows a partial schematic diagram of the unmanned aerial vehicle proposed by the present disclosure, and specifically shows the frame 210 and the liquid level gauge 100 of the unmanned aerial vehicle.
  • the UAV proposed in the present disclosure is illustrated by taking an agricultural UAV with a liquid container as an example. It will be easily understood by those skilled in the art that, in order to apply the related designs of the present disclosure to other types of unmanned aerial vehicles or other equipment, various modifications, additions, substitutions, deletions or deletions may be made to the following specific embodiments. Other variations, which remain within the scope of the principles of the UAV presented in this disclosure.
  • the UAV proposed by the present disclosure includes a frame 210 , a container 220 , a liquid level float 230 and a liquid level gauge 100 .
  • FIG. 8 is a representative cross-sectional view of a part of the structure of the UAV proposed by the present disclosure, specifically showing the container 220 , the liquid level float 230 and the liquid level gauge 100 ; in FIG. 9 , A partial side sectional view of FIG. 8 is representatively shown;
  • FIG. 10 is representatively shown a schematic structural diagram of the liquid level float 230 of the unmanned aerial vehicle proposed by the present disclosure.
  • the structure, connection manner and functional relationship of the main components of the UAV proposed in the present disclosure will be described in detail below with reference to the above drawings.
  • the drone proposed by the present disclosure may adopt the liquid level gauge 100 proposed by the present disclosure and described in detail in the above-mentioned embodiments.
  • the frame 210 has a fixing structure 211 , which can be used to fix the liquid level gauge 100 , for example, is fixedly connected to the lower end of the first bracket 110 of the liquid level gauge 100 by connecting parts such as bolts.
  • the container 220 is detachably disposed on the rack 210 and located above the fixed structure 211 , and the space between the bottom of the container 220 and the fixed structure 211 is the area where the level gauge 100 is installed.
  • the liquid level float 230 includes a second bracket 231 and a swing arm 232 .
  • the second bracket 231 is disposed at the bottom of the container 220 , the swing arm 232 is pivotally connected to the second bracket 231 , and two ends of the swing arm 232 are respectively provided with a magnet 233 and a floating cavity 234 .
  • the liquid level gauge 100 is fixed to the fixing structure 211 by the lower end of the first bracket 110 , and corresponds to the position of the liquid level float 230 , and may further correspond to the position of the magnet 233 of the liquid level float 230 . Accordingly, the elastic member 130 of the liquid level gauge 100 can push the upper end of the main body 120 of the liquid level gauge 100 against the outer bottom of the container 220 .
  • the unmanned aerial vehicle proposed in the present disclosure can ensure the close fit between the liquid level gauge 100 and the bottom of the container 220, and overcome the problem that the existing drone cannot guarantee the fit between the liquid level gauge 100 and the container 220. , to improve the reliability and accuracy of the liquid level measurement by the drone using the liquid level gauge 100.
  • the second bracket 231 may be connected to the container 220 through two connecting pieces 2311 .
  • the connector 2311 can be a fastening nut.
  • the second bracket 231 can also be connected to the container 220 through one or more than two connecting pieces 2311 , and the second bracket 231 can also be connected to the container 220 in other ways, such as welding, integral molding, etc. This embodiment is limited.
  • the end of the swing arm 232 provided with the floating cavity 234 may be provided with a counterweight 235.
  • the present disclosure can utilize the setting of the counterweight 235, for example, when the flying inclination of the drone is too large, to avoid the misoperation of swinging the pendulum rod driven by the self-weight of the magnet 233, and further improve the reliability and accuracy of the liquid level measurement .
  • the included angle ⁇ (such as the included angle ⁇ of the illustrated direction) between the center line of the floating cavity 234 and the extending direction of the swing arm 232 , and the included angle ⁇ may be greater than 90°, For example, 100°, 105°, 120°, 135°, etc.
  • the floating cavity 234 may be substantially a hollow columnar structure.
  • the buoyant cavity 234 may also be a hollow structure with other shapes, such as spherical, ellipsoid, cube, polyhedron, etc., which is not limited to this embodiment.
  • the liquid level gauge proposed by the present disclosure includes a first bracket, a main body, an elastic member, and a sensor module.
  • the main body is movably connected to the upper end of the first bracket, and the elastic piece is arranged between the main body and the first bracket to provide an upward pre-tightening force to the main body.
  • the liquid level gauge proposed in the present disclosure can use the pre-tightening force provided by the elastic member to ensure that the liquid level gauge is closely attached to the bottom of the container above when it is installed in a fixed structure such as a UAV frame, and lifts the Reliability and accuracy of level gauges.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Level Indicators Using A Float (AREA)

Abstract

一种液位计（100）及无人机。液位计（100）包含第一支架（110）、主体（120）、弹性件（130）以及传感器模块（140）；第一支架（110）下端用以与一固定结构（211）连接；主体（120）活动连接于第一支架（110）上端；弹性件（130）设置于主体（120）与第一支架（110）之间，用以向主体（120）提供一向上的预紧力；传感器模块（140）设置于主体（120），用以感测磁通量。液位计（100）能够在设置于例如无人机机架（210）的固定结构（211）时，利用弹性件（130）提供的预紧力，保证液位计（100）紧密贴合于上方的容器（220）底部，提升液位计（100）的可靠性和准确性。

Description

液位计及无人机 技术领域
本公开涉及无人机技术领域，尤其涉及一种液位计及无人机。
背景技术
例如农用无人机等无人机，需要对设置在机身的容器内的液位进行测量。现有无人机所采用的液位计监测模块直接固定在机身上，当容器装入无人机时，液位计与容器之间的贴合无法得到保证，影响对液位的监测效果，甚至出现无法识别液面的风险。
发明内容
本公开所要解决的技术问题是如何提供一种能够保证与容器底部紧密贴合的液位计。
本公开所要解决的技术问题是如何提供一种能够准确、可靠地识别容器液位的无人机。
本公开的额外方面和优点将部分地在下面的描述中阐述，并且部分地将从描述中变得显然，或者可以通过本公开的实践而习得。
为实现上述目的，本公开采用如下技术方案：
根据本公开的一个方面，提供一种液位计；其中，包含第一支架、主体、弹性件以及传感器模块；所述第一支架下端用以与一固定结构连接；所述主体活动连接于所述第一支架上端；所述弹性件设置于所述主体与所述第一支架之间，用以向所述主体提供一向上的预紧力；所述传感器模块设置于所述主体，用以感测磁通量。
根据本公开的其中一个实施方式，所述主体具有第一腔体，所述第一腔体于所述主体下端开口；其中，所述主体以所述开口套设于所述第一支架上端，而使所述第一支架部分位于所述第一腔体内。
根据本公开的其中一个实施方式，所述第一支架具有第二腔体，所述第二腔体于所述第一支架上端开口；其中，所述弹性件至少部分设置于所述第二腔体内。
根据本公开的其中一个实施方式，所述第一腔体内设置有连接柱，所述第一支架上端套设于所述连接柱下端，而使所述连接柱部分位于所述第二腔体内；其中，所述弹性件设置于所述连接柱下端与所述第二腔体底部之间。
根据本公开的其中一个实施方式，所述第一支架上端设置有卡扣结构。
根据本公开的其中一个实施方式，所述传感器模块设置于所述第一腔体顶部，所述第一腔体内设置有防尘结构，所述防尘结构位于所述传感器模块下方。
根据本公开的其中一个实施方式，所述传感器模块包含至少两个传感器单元，所述至少两个传感器单元设置于所述主体的同一高度位置。
根据本公开的其中一个实施方式，所述传感器单元的数量为4个～12个。
根据本公开的其中一个实施方式，所述至少两个传感器单元沿一圆形路径排列。
根据本公开的其中一个实施方式，所述传感器模块具有信号输出端；其中，所述至少两个传感器单元以信号并联的方式连接于所述信号输出端。
根据本公开的其中一个实施方式，所述传感器模块包含电路板、传感器单元、信号输出端以及泡棉板；所述电路板设置于所述主体内；所述传感器单元设置于所述电路板上；所述信号输出端一端连接于所述电路板，另一端伸出于所述主体；所述泡棉板设置于所述电路板与所述主体顶部的内壁之间。
根据本公开的其中一个实施方式，所述主体顶部具有开口，所述传感器模块还包含壳体；所述壳体可拆卸地设置于所述主体顶部的开口；其中，所述电路板设置于所述壳体内，信号输出端另一端伸出于所述壳体，所述泡棉板设置于所述电路板与所述壳体顶部的内壁之间。
根据本公开的其中一个实施方式，所述第一支架外部与所述主体外部之间设置有防尘密封套。
根据本公开的另一个方面，提供一种无人机；其中，包含机架、容器、液位浮子以及本公开提出的并在上述实施方式中所述的液位计；所述机架具有固定结构；所述容器可拆装地设置于所述机架，并位于所述固定结构上方；所述液位浮子包含第二支架及摆臂；所述第二支架设置于所述容器内的底部；所述摆臂枢接于所述第二支架，且两端分别设置有磁铁及浮腔；所述液位计以所述第一支架下端固定于所述固定结构，并与所述液位浮子位置相对应；其中，所述液位计的所述弹性件将所述液位计的所述主体上端抵顶于所述容器的外侧底部。
根据本公开的其中一个实施方式，所述第二支架通过至少两个连接件连接于所述容器。
根据本公开的其中一个实施方式，所述摆臂的设置有所述浮腔的一端设置有配重。
根据本公开的其中一个实施方式，所述浮腔的中心线与摆臂的延伸方向之间具有夹角，所述夹角大于90°。
本公开提出的液位计包含第一支架、主体、弹性件以及传感器模块。主体活动连接于第一支架上端，弹性件设置于主体与第一支架之间，用以向主体提供一向上的预紧力。通过上述结构设计，本公开提出的液位计能够在设置于例如无人机机架的固定结构时，利用弹性件提供的预紧力，保证液位计紧密贴合于上方的容器底部，提升液位计的可靠性和准确性。
附图说明
图1是根据一示例性实施方式示出的一种液位计的结构示意图；
图2是图1示出的液位计的分解示意图；
图3是图1示出的液位计的剖视图；
图4是图1示出的液位计的传感器模块的立体图；
图5是图4示出的传感器模块的分解示意图；
图6是图4示出的传感器模块的另一角度的分解示意图；
图7是根据一示例性实施方式示出的一种无人机的局部示意图；
图8是图7示出的无人机的部分结构的剖视图；
图9是图8的部分侧向剖视图；
图10是图7示出的无人机的液位浮子的结构示意图。
其中，附图标记说明如下：
100.液位计；                             141.传感器单元；
110.第一支架；                           142.信号输出端；
111.第二腔体；                           143.电路板；
112.卡扣结构；                           1431.第三卡槽；
120.主体；                               144.泡棉板；
1201.第一卡扣；                          1441.第四卡槽；
121.第一腔体；                           1442.通孔；
122.连接柱；                             150.防尘密封套；
123.防尘结构；                           210.机架；
124.壳体；                               211.固定结构；
1241.出线口；                            220.容器；
12411.第二卡扣；                         230.液位浮子；
1242.端头卡块；                         231.第二支架；
12421.第二卡槽；                        2311.连接件；
1243.第三卡扣；                         232.摆臂；
1244.第一卡槽；                         233.磁铁；
130.弹性件；                            234.浮腔；
140.传感器模块；                        235.配重；
                                        α.夹角。
具体实施方式
现在将参考附图更全面地描述示例实施方式。然而，示例实施方式能够以多种形式实施，且不应被理解为限于在此阐述的实施方式；相反，提供这些实施方式使得本公开将全面和完整，并将示例实施方式的构思全面地传达给本领域的技术人员。图中相同的附图标记表示相同或类似的结构，因而将省略它们的详细描述。
参阅图1，其代表性地示出了本公开提出的液位计100的结构示意图。在该示例性实施方式中，本公开提出的液位计100是以应用于具有液体容器的农用无人机为例进行说明的。本领域技术人员容易理解的是，为将本公开的相关设计应用于其他类型的无人机或其他设备中，而对下述的具体实施方式做出多种改型、添加、替代、删除或其他变化，这些变化仍在本公开提出的液位计100的原理的范围内。
如图1所示，在本实施方式中，本公开提出的液位计100包含第一支架110、主体120、弹性件以及传感器模块。配合参阅图2至图6，图2中代表性地示出了液位计的分解示意图；图3中代表性地示出了液位计的剖视图；图4中代表性地示出了液位计的传感器模块的立体图；图5中代表性地示出了传感器模块的分解示意图；图6中代表性地示出了传感器模块的另一角度的分解示意图。以下将结合图1至图6，对本公开提出的液位计100的各主要组成部分的结构、连接方式和功能关系进行详细说明。
如图1至图3所示，在本实施方式中，第一支架110下端用以与一固定结构211连接，例如无人机的机架210上的固定结构211。主体120活动连接于第一支架110上端。弹性件130设置在主体120与液位计100支架之间，弹性件130能够向主体120提供一向上的预紧力。据此，当液位计100以第一支架110固定于固定结构211时，通过弹性件130提供的预紧力，主体120能够被紧密贴合在容器220的底部(配合参阅图8)。传感器模块140设置在主体120，传感器模块140能够感测设置在容器220内部的液位浮子230(配合参阅图9)的磁体的磁通量。据此，液位计100所设置的设备(例如无人机)的控制系 统能够根据液位计100感测到的磁通量与预设的阈值进行比对，以此判断容器220内的液位状态，实现液位检测功能。通过上述结构设计，相比于现有液位计100无法保证与容器220之间的贴合的设计，本公开提出的液位计100能够利用弹性件130提供的预紧力，保证液位计100紧密贴合于上方的容器220底部，提升液位计100的可靠性和准确性。
可选地，如图2和图3所示，在本实施方式中，主体120可以具有第一腔体121，且该第一腔体121在主体120下端开口。在此基础上，主体120以上述开口套设于第一支架110上端，而使第一支架110部分位于第一腔体121内。
进一步地，如图2和图3所示，基于主体120具有第一腔体121的结构设计，在本实施方式中，第一支架110可以具有第二腔体111，且该第二腔体111在主体120上端开口。在此基础上，弹性件130至少部分设置在第二腔体111内。
进一步地，如图2和图3所示，基于主体120具有第一腔体121且第一支架110具有第二腔体111的结构设计，在本实施方式中，第一腔体121内可以设置有连接柱122。第一支架110上端套设于该连接柱122下端，而使连接柱122部分位于第二腔体111内。在此基础上，弹性件130可以设置于连接柱122下端与第二腔体111底部之间。换言之，弹性件130下端可以连接于所述第二腔体111底部，弹性件130上端可以抵顶于连接柱122下端，据此，弹性件130能够将预紧力施加于连接柱122。
需说明的是，如图2和图3所示，基于连接柱122的结构设计，在本实施方式中，当液位计100未设置于容器220下方时，弹性件130可以大致呈释放状态，但此时连接柱122与弹性件130仍然保持接触，即弹性件130此时仍然对主体施加弹性力。当液位计100以第一支架110固定于固定结构211，且容器220设置于液位计100上方时，容器220下压主体120使其相对第一支架110向下移动，连接柱122接触于弹性件130上端并对弹性件130下压，此时，弹性件130呈压缩状态而对主体120施加一向上的弹性回复力，即上述的预紧力，从而使得固定于固定结构211的液位计100的主体120紧密贴合在容器220的底部。
进一步地，如图2和图3所示，基于主体120具有第一腔体121的结构设计，在本实施方式中，第一支架110上端可以设置有卡扣结构112。通过上述结构设计，能够避免主体120与第一支架110脱离。具体而言，卡扣结构112可以具体包含卡钩结构、卡榫结构、卡合凸起结构等，并不以本实施方式为限。
进一步地，如图2和图3所示，基于主体120具有第一腔体121的结构设计，在本实施方式中，传感器模块140可以设置在第一腔体121顶部，第一腔体121内可以设置有防 尘结构123，该防尘结构123位于传感器模块140下方。通过上述结构设计，液位计100能够利用防尘结构123为弹性件130提供防尘功能，避免灰尘进入第一腔体121和第二腔体111，从而避免因灰尘堆积而导致弹性件130卡死，无力反弹的问题，进一步提升液位计100的准确性和可靠性。
进一步地，基于防尘结构123的结构设计，在本实施方式中，防尘结构123可以包含防尘贴。
可选地，如图3至图6所示，在本实施方式中，传感器模块140可以包含至少两个传感器单元141，且这些传感器单元141可以设置于主体120的同一高度位置，换言之，当液位计100设置在容器220底部时，各传感器单元141与容器220底部的距离大致相同。通过上述结构设计，液位计100能够利用包含至少两个传感器单元141的传感器模块140，对至少两个方向上的磁通量均能够提供较为准确的感测，避免液位浮子230不稳定而造成的磁场方向偏移对磁通量感测的影响，进一步提升液位计100的准确性和可靠性。在其他实施方式中，液位计100的传感器模块140亦可仅包含1个传感器单元141，均不以本实施方式为限。
进一步地，基于传感器模块140包含至少两个传感器单元141的结构设计，在本实施方式中，传感器单元141的数量可以为4个～12个，例如4个、6个、9个、12个等。在其他实施方式中，传感器单元141的数量亦可少于4个、或可多于12个，例如3个、16个等，并不以本实施方式为限。
进一步地，基于传感器模块140包含至少两个传感器单元141的结构设计，在本实施方式中，至少两个传感器单元141可以大致沿一圆形路径排列。配合参阅图3和图4，对应于容器220内的底部设置的液位浮子230包含磁铁233的设计，磁铁233在上述圆形路径所在平面(例如水平面，或如容器220底部所在平面)的正投影大致位于该圆形路径的圆心位置。通过上述结构设计，液位计100能够使得各传感器单元141与磁铁233的距离大致相等，从而减小各传感器单元141感应到的磁铁233的磁通量之间的差异，进一步提升液位计100的准确性和可靠性。在其他实施方式中，至少两个传感器单元141亦可采用其他布置形式，且至少两个传感器单元141与液位浮子230的磁铁233的位置关系亦可采用其他形式，均不以本实施方式为限。
进一步地，如图5和图6所示，在本实施方式中，传感器模块140可以包含电路板143以及信号输出端142(例如一信号线)。具体而言，至少两个传感器单元141设置在电路板143上，信号输出端142一端连接(例如采用焊接方式)于电路板143，另一端伸 出于主体120。传感器模块140可以将感测到的磁通量经由信号输出端142输出至控制系统。在此基础上，基于传感器模块140包含至少两个传感器单元141的结构设计，在本实施方式中，至少两个传感器单元141可以采用信号并联的方式连接于信号输出端142。通过上述结构设计，传感器模块140输出至控制系统的磁通量信号，可以理解为至少两个传感器单元141所感测到的磁通量最大的一个，进一步提升液位计100的灵敏度和精确度。
可选地，如图2至图6所示，在本实施方式中，传感器模块140还可以包含壳体124。具体而言，主体120顶部开设有开口，该壳体124可拆卸地固定于主体120顶部的该开口中。壳体124能够用以容置传感器模块140的其余结构，例如电路板143以及泡棉板144。并且，壳体124还具有出线口1241，用以部分容置传感器模块140的信号输出端142，并供信号输出端142的连接于控制系统的一端，经由出线口1241伸出。
需说明的是，在其他实施方式中，该壳体124亦可视为设置在主体120顶部开口的一体结构。即，传感器模块140亦可不包含壳体124，且主体120顶部亦可为封闭结构。在此基础上，传感器模块140所包含的其余结构，例如电路板143、泡棉板144等仍设置在主体120内。换言之，本实施方式中设置的壳体124，对于传感器模块140而言，可以视为容纳其余结构的外壳，对于主体120而言，亦可视为主体120顶部的可拆装的部分盖体结构。
进一步地，如图2至图6所示，在本实施方式中，壳体124的外壁可以设置有第一卡槽1244，相对应地，主体120的开口的内壁可以设置有第一卡扣1201，壳体124与主体120的开口通过上述第一卡槽1244与第一卡扣1202的卡扣配合实现可拆卸地固定。在其他实施方式中，主体120与壳体124上的卡扣与卡槽结构亦可互换位置，或可采用其他相互配合的定位结构，并不以本实施方式为限。
进一步地，如图2至图6所示，在本实施方式中，壳体124的出线口1241的端部可以可拆卸地固定有端头卡块1242。具体而言，该端头卡块1242开设有供信号输出端142伸出的通孔。出线口1241的端口的内壁设置有第二卡扣12411，相对应地，端头卡块1242开设有第二卡槽12421，端头卡块1242与出线口1241通过上述第二卡槽12421与第二卡扣12411的卡扣配合实现可拆卸地固定。在其他实施方式中，端头卡块1242与出线口1241上的卡扣与卡槽结构亦可互换位置，或可采用其他相互配合的定位结构，并不以本实施方式为限。
进一步地，如图3至图6所示，基于传感器模块140包含电路板143的结构设计，在本实施方式中，电路板143周缘可以开设有第三卡槽1431，相对应地，壳体124的内壁 可以开设有第三卡扣1243，壳体124与电路板143通过上述第三卡扣1243与第三卡槽1431的卡扣配合实现可拆卸地固定。在其他实施方式中，壳体124与电路板143上的卡扣与卡槽结构亦可互换位置，或可采用其他相互配合的定位结构，并不以本实施方式为限。
可选地，如图3至图6所示，在本实施方式中，传感器模块140还可以包含泡棉板144。具体而言，该泡棉板144设置在电路板143与主体120顶部的内壁(即壳体124顶部的内壁)之间。在此基础上，泡棉板144开设有多个通孔1442，这些通孔1442用以容纳电路板143上设置的多个传感器单元141。通过上述结构设计，本公开能够利用泡棉板144填充电路板143与主体120之间的空隙，实现对电路板143的预固定，并能够利用泡棉板144的材料特点满足轻量化要求。另外，结合下述的填充材料的设计，泡棉板144的设置还能够减少例如灌封胶等填充材料的用量。
可选地，如图3至图6所示，基于传感器模块140包含泡棉板144，同时基于主体120具有壳体124，且壳体124设置有第三卡扣1243的结构设计，在本实施方式中，泡棉板144的周缘可以开设有第四卡槽1441，该第四卡槽1441与第三卡扣1243相对应，壳体124与泡棉板144通过上述第三卡扣1243与第四卡槽1441的卡扣配合实现可拆卸地固定。在其他实施方式中，壳体124与泡棉板144上的卡扣与卡槽结构亦可互换位置，或可采用其他相互配合的定位结构，并不以本实施方式为限。
进一步地，基于传感器模块140包含电路板143以及泡棉板144的结构设计，在本实施方式中，本公开可以在电路板143、泡棉板144与主体120之间的空隙处，填充例如灌封胶的填充材料，以此实现对传感器模块140的防水和防尘功能。
可选地，如图1至图3所示，在本实施方式中，第一支架110外部与主体120外部之间可以设置有防尘密封套150。通过上述结构设计，能够减少灰尘、杂质通过第一支架110与主体120之间的活动连接的位置进入液位计100，进而为弹性件130提供防尘功能，避免灰尘进入第一腔体121和第二腔体111，从而避免因灰尘堆积而导致弹性件130卡死，无力反弹的问题，进一步提升液位计100的准确性和可靠性。
在此应注意，附图中示出而且在本说明书中描述的液位计仅仅是能够采用本公开原理的许多种液位计中的几个示例。应当清楚地理解，本公开的原理绝非仅限于附图中示出或本说明书中描述的液位计的任何细节或液位计的任何部件。
基于上述对本公开提出的液位计的一示例性实施方式的详细说明，以下将对本公开提出的无人机的一示例性实施方式进行说明。
参阅图7，其代表性地示出了本公开提出的无人机的局部示意图，具体示出了无人机 的机架210与液位计100。在该示例性实施方式中，本公开提出的无人机是以具有液体容器的农用无人机为例进行说明的。本领域技术人员容易理解的是，为将本公开的相关设计应用于其他类型的无人机或其他设备中，而对下述的具体实施方式做出多种改型、添加、替代、删除或其他变化，这些变化仍在本公开提出的无人机的原理的范围内。
如图7所示，在本实施方式中，本公开提出的无人机包含机架210、容器220、液位浮子230以及液位计100。配合参阅图8至图10，图8中代表性地示出了本公开提出的无人机的部分结构的剖视图，具体示出了容器220、液位浮子230与液位计100；图9中代表性地示出了图8的部分侧向剖视图；图10中代表性地示出了本公开提出的无人机的液位浮子230的结构示意图。以下将结合上述附图，对本公开提出的无人机的各主要组成部分的结构、连接方式和功能关系进行详细说明。
如图7至图10所示，在本实施方式中，本公开提出的无人机可以采用本公开提出的并在上述实施方式中详细说明的液位计100。具体而言，机架210具有固定结构211，该固定结构211可以用于固定液位计100，例如通过螺栓等连接件与液位计100的第一支架110下端固定连接。容器220可拆装地设置于机架210，并位于固定结构211上方，容器220底部与固定结构211之间的空间即为安装液位计100的区域。液位浮子230包含第二支架231及摆臂232。第二支架231设置在容器220内的底部，摆臂232枢接于第二支架231，且摆臂232的两端分别设置有磁铁233及浮腔234。液位计100以第一支架110下端固定于固定结构211，并与液位浮子230的位置相对应，且进一步可以与液位浮子230的磁铁233的位置相对应。据此，液位计100的弹性件130能够将液位计100的主体120上端抵顶于容器220的外侧底部。通过上述结构设计，本公开提出的无人机能够保证其液位计100与容器220底部的紧密贴合，克服现有无人机无法保证液位计100与容器220之间的贴合的问题，提高无人机利用液位计100进行液位测量的可靠性和准确性。
可选地，如图8和图9所示，在本实施方式中，第二支架231可以通过两个连接件2311连接于容器220。进一步地，该连接件2311可以为紧固螺母。通过上述结构设计，能够避免第二支架231因摆臂232的反复摆动而产生转动位移，即为液位浮子230提供定向保证，确保液位浮子230始终处于稳定的位置，进一步提高液位测量的可靠性和准确性。在其他实施方式中，第二支架231亦可通过一个或者两个以上连接件2311连接于容器220，第二支架231还可以采用其他方式连接于容器220，例如焊接、一体成型等，均不以本实施方式为限。
可选地，如图10所示，在本实施方式中，摆臂232的设置有浮腔234的一端可以设 置有配重235。通过上述结构设计，本公开能够利用配重235的设置，在例如无人机飞行倾角过大时，避免因磁铁233自重带动摆杆摆动的误动作，进一步提高液位测量的可靠性和准确性。
可选地，如图10所示，浮腔234的中心线与摆臂232的延伸方向之间具有夹角α(如图示的方向的夹角α)，该夹角α可以大于90°，例如100°、105°、120°、135°等。通过上述结构设计，能够在浮腔234受容器220内液体浮力浮起时，使得浮腔234的中心线大致保持在竖直状态，或者与竖直方向偏离角度较小的状态。
可选地，如图10所示，在本实施方式中，浮腔234可以大致呈中空的柱状结构。在其他实施方式中，浮腔234亦可选用其他形状的中空结构，例如球状、椭球状、立方体、多面体等，并不以本实施方式为限。
在此应注意，附图中示出而且在本说明书中描述的无人机仅仅是能够采用本公开原理的许多种无人机中的几个示例。应当清楚地理解，本公开的原理绝非仅限于附图中示出或本说明书中描述的无人机的任何细节或无人机的任何部件。
综上所述，本公开提出的液位计包含第一支架、主体、弹性件以及传感器模块。主体活动连接于第一支架上端，弹性件设置于主体与第一支架之间，用以向主体提供一向上的预紧力。通过上述结构设计，本公开提出的液位计能够在设置于例如无人机机架的固定结构时，利用弹性件提供的预紧力，保证液位计紧密贴合于上方的容器底部，提升液位计的可靠性和准确性。
虽然已参照几个典型实施例描述了本公开，但应当理解，所用的术语是说明和示例性、而非限制性的术语。由于本公开能够以多种形式具体实施而不脱离公开的精神或实质，所以应当理解，上述实施例不限于任何前述的细节，而应在随附权利要求所限定的精神和范围内广泛地解释，因此落入权利要求或其等效范围内的全部变化和改型都应为随附权利要求所涵盖。

Claims (17)

  1. 一种液位计，其特征在于：
    所述液位计包含第一支架、主体、弹性件以及传感器模块；
    所述第一支架下端用以与一固定结构连接；
    所述主体活动连接于所述第一支架上端；
    所述弹性件设置于所述主体与所述第一支架之间，用以向所述主体提供一向上的预紧力；
    所述传感器模块设置于所述主体，用以感测磁通量。
  2. 根据权利要求1所述的液位计，其特征在于：
    所述主体具有第一腔体，所述第一腔体于所述主体下端开口；
    其中，所述主体以所述开口套设于所述第一支架上端，而使所述第一支架部分位于所述第一腔体内。
  3. 根据权利要求2所述的液位计，其特征在于：
    所述第一支架具有第二腔体，所述第二腔体于所述第一支架上端开口；
    其中，所述弹性件至少部分设置于所述第二腔体内。
  4. 根据权利要求3所述的液位计，其特征在于：
    所述第一腔体内设置有连接柱，所述第一支架上端套设于所述连接柱下端，而使所述连接柱部分位于所述第二腔体内；
    其中，所述弹性件设置于所述连接柱下端与所述第二腔体底部之间。
  5. 根据权利要求2所述的液位计，其特征在于：
    所述第一支架上端设置有卡扣结构。
  6. 根据权利要求2所述的液位计，其特征在于：
    所述传感器模块设置于所述第一腔体顶部，所述第一腔体内设置有防尘结构，所述防尘结构位于所述传感器模块下方。
  7. 根据权利要求1所述的液位计，其特征在于：
    所述传感器模块包含至少两个传感器单元，所述至少两个传感器单元设置于所述主体的同一高度位置。
  8. 根据权利要求7所述的液位计，其特征在于：
    所述传感器单元的数量为4个～12个。
  9. 根据权利要求7所述的液位计，其特征在于：
    所述至少两个传感器单元沿一圆形路径排列。
  10. 根据权利要求7所述的液位计，其特征在于：
    所述传感器模块具有信号输出端，所述至少两个传感器单元以信号并联的方式连接于所述信号输出端。
  11. 根据权利要求1所述的液位计，其特征在于：
    所述传感器模块包含电路板、传感器单元、信号输出端以及泡棉板；
    所述电路板设置于所述主体内；
    所述传感器单元设置于所述电路板上；
    所述信号输出端一端连接于所述电路板，另一端伸出于所述主体；
    所述泡棉板设置于所述电路板与所述主体顶部的内壁之间。
  12. 根据权利要求11所述的液位计，其特征在于：
    所述主体顶部具有开口；
    所述传感器模块还包含壳体；
    所述壳体可拆卸地设置于所述主体顶部的开口；
    其中，所述电路板设置于所述壳体内，信号输出端另一端伸出于所述壳体，所述泡棉板设置于所述电路板与所述壳体顶部的内壁之间。
  13. 根据权利要求1所述的液位计，其特征在于：
    所述第一支架外部与所述主体外部之间设置有防尘密封套。
  14. 一种无人机，其特征在于：
    所述无人机包含机架、容器、液位浮子以及权利要求1～11任一项所述的液位计；
    所述机架具有固定结构；
    所述容器可拆装地设置于所述机架，并位于所述固定结构上方；
    所述液位浮子包含第二支架以及摆臂；
    所述第二支架设置于所述容器内的底部；
    所述摆臂枢接于所述第二支架，且两端分别设置有磁铁及浮腔；
    所述液位计以所述第一支架下端固定于所述固定结构，并与所述液位浮子位置相对应；
    其中，所述液位计的所述弹性件将所述液位计的所述主体上端抵顶于所述容器的外侧底部。
  15. 根据权利要求14所述的无人机，其特征在于：
    所述第二支架通过至少两个连接件连接于所述容器。
  16. 根据权利要求14所述的无人机，其特征在于：
    所述摆臂的设置有所述浮腔的一端设置有配重。
  17. 根据权利要求14所述的无人机，其特征在于：
    所述浮腔的中心线与摆臂的延伸方向之间具有夹角，所述夹角大于90°。
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